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Finding the Fourth Proportional to 5,651.79, 7,795.55 and 3,880.32

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Solution

The fourth proportional to 5,651.79, 7,795.55 and 3,880.32 is: 5,352.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,651.79 : 7,795.55 = 3,880.32 : x
  2. Step 2: Convert to fraction form
    5,651.79/7,795.55 = 3,880.32/x
  3. Step 3: Cross multiply
    5,651.79x = 7,795.55 × 3,880.32
  4. Step 4: Simplify right side
    5,651.79x = 30,249,209.17
  5. Step 5: Solve for x
    x = 30,249,209.17/5,651.79
  6. Step 6: Final answer
    x = 5,352.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.